Communication systems and methods for transmitting and processing of data

Abstract

According to various examples, a communication system is described comprising a receiver configured to receive, for each of a plurality of object classes, via a wireless communication channel shared among transmitters of a respective set of transmitters, a superposition of transmitted hyperdimensional code words, comprising, for each transmitter of the respective set of transmitters, a hyperdimensional code word transmitted via the wireless communication channel and encoding data of an object of the object class acquired by the transmitter, a memory configured to store, for each of the plurality of object classes, the received superposition in association with the class, a processor configured to classify a hyperdimensional code word representing an object to be classified by correlating the hyperdimensional code word with each stored superposition and to generate a classification result corresponding to the object class associated with a superposition fulfilling a predetermined criterion based on correlation results.

The invention claimed is: 
     
         1 . A communication system comprising:
 a receiver configured to receive, for each of a plurality of object classes, via a wireless communication channel shared among transmitters of a respective set of transmitters, a received superposition of transmitted hyperdimensional code words, comprising, for each transmitter of the respective set of transmitters, a hyperdimensional code word transmitted via the wireless communication channel and encoding data of an object of the object class acquired by the transmitter;   a memory configured to store, for each of the plurality of object classes, the received superposition as a stored superposition in association with the class;   a processor configured to:
 classify a hyperdimensional code word representing an object to be classified by correlating the hyperdimensional code word with each stored superposition; 
 generate a classification result corresponding to the object class associated with a superposition fulfilling a predetermined criterion based on correlation results; and 
 correlate the hyperdimensional code word with the stored superposition by calculating an inner product with the stored superposition. 
   
     
     
         2 . The communication system of  claim 1 , wherein, for each object class, the superposition includes at least some transmitted hyperdimensional code words encoding data of the same object. 
     
     
         3 . The communication system of  claim 1 , comprising, for each object class, the set of transmitters, wherein the transmitters of the set of transmitters are configured to transmit the hyperdimensional code words to superimpose on the wireless communication channel. 
     
     
         4 . The communication system of  claim 3 , wherein the transmitter are configured to use the same spectral resources to transmit the hyperdimensional code words. 
     
     
         5 . The communication system of  claim 3 , wherein each transmitter is configured to scale the hyperdimensional code word it transmits to compensate a channel response between the transmitter and the receiver. 
     
     
         6 . The communication system of  claim 3 , wherein each transmitter is configured to encode the hyperdimensional code word according to a linear code and the receiver is configured to decode the received superposition according to the linear code. 
     
     
         7 . The communication system of  claim 6 , wherein the memory is configured to store the received superposition in decoded form. 
     
     
         8 . The communication system of  claim 3 , wherein each transmitter is configured to modulate symbols of the hyperdimensional code word it transmits with a modulation sequence, wherein the modulations sequences of different transmitters of the set of transmitters are orthogonal and wherein the receiver is configured to observe, for each hyperdimensional code word symbol, a sequence of received symbols shorter than the modulation sequence and to estimate each symbol of the superposition of hyperdimensional code words from a power of a corresponding sequence of received symbols. 
     
     
         9 . The communication system of  claim 1 , wherein the predetermined criterion is that the superposition fulfilling the predetermined criterion is the superposition which gives a maximum correlation result. 
     
     
         10 . A communication system comprising:
 a receiver configured to receive, from a plurality of transmitters, via a wireless communication channel, a received superposition of transmitted hyperdimensional code words, comprising, for each transmitter of the plurality of transmitters, a hyperdimensional code word transmitted via the wireless communication channel encoding data of the same object;   a processor configured to;
 implement a classification model or regression model; 
 supply the received superposition to the classification model or regression model; 
 determine a characteristic of the object from an output of the classification model or regression model in response to being supplied with the received superposition; and 
 transmit the hyperdimensional code words to superimpose on the wireless communication channel. 
   
     
     
         11 . The communication system of  claim 10 , wherein the classification model or regression model is a classification model comprising, for each of a plurality of object classes, a hyperdimensional code word representing the object class and wherein the processor is configured to classify the object by correlating the received superposition, for each object class, with the hyperdimensional code word representing the object class and generating a classification result corresponding to the object class represented by a hyperdimensional code word fulfilling a predetermined criterion based on correlation results. 
     
     
         12 . The communication system of  claim 10 , wherein the processor is configured to correlate the hyperdimensional code word with a stored superposition by calculating an inner product with the stored superposition. 
     
     
         13 . The communication system of  claim 1 , wherein the transmitters are configured to use the same spectral resources to transmit the hyperdimensional code words. 
     
     
         14 . A communication device comprising:
 a receiver configured to receive a sequence of symbols of a transmitted hyperdimensional code word;   a processor configured to
 correlate the received sequence of symbols with each of a plurality of candidate hyperdimensional code words, symbol-by-symbol; 
 for each of the plurality of candidate hyperdimensional code words, aggregate, for each symbol of the sequence of symbols, the result of the correlation for the symbol with the results of the correlations for the previous symbols of the sequence of symbols, to generate a total correlation result for the symbol for the candidate hyperdimensional code word; 
 check, for each symbol of the sequence of symbols, whether a predetermined reliability criterion is fulfilled; and 
 output, if for a symbol its predetermined reliability criterion is fulfilled, a received source data element or a hyperdimensional code word corresponding to the candidate hyperdimensional code word which gives a maximum total correlation result for the symbol. 
   
     
     
         15 . The communication device of  claim 14 , comprising comparing, successively for the symbols of the sequence of symbols, the total correlation results for the candidate hyperdimensional code words, wherein the predetermined reliability criterion is that the comparison of the total correlation results indicates that one of the candidate hyperdimensional code words is equal to the transmitted hyperdimensional code word with a predefined minimum reliability and wherein the processor is configured to, when the predetermined reliability criterion is fulfilled, output the one of the candidate hyperdimensional code words as received hyperdimensional code word or a source data element corresponding to the one of the candidate hyperdimensional code words as received source data element. 
     
     
         16 . The communication device of  claim 14 , wherein the predetermined reliability criterion is a predefined number of symbols of the received sequence of symbols having been correlated with the plurality of candidate hyperdimensional code words. 
     
     
         17 . The communication device of  claim 16 , wherein the predefined number of symbols is smaller than the number of symbols of the received sequence of symbols.